An electron is moving north; what direction should a magnetic field be oriented, so the magnetic...

An electron is moving north; what direction should a magnetic field be oriented, so the magnetic force on the electron just balances the gravitational force?
A square loop is in the x-y plane, with its top and bottom parallel with the x-axis, and its sides parallel with the y-axis. It carries a clockwise current when viewed from the positive z-axis. There is a constant magnetic field pointed in the x-axis direction. What are then directions of the magnetic forces on the four sides?

Expert Solution

genius_generous answered 2 years ago

1. An electron, initially moving in the +x-direction enters a uniform magnetic field in the +y-direction....

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